package com.ofps.web.core.config;

import com.ofps.web.security.filter.JwtAuthenticationTokenFilter;
import com.ofps.web.security.handle.AuthenticationEntryPointImpl;
import com.ofps.web.security.handle.LogoutSuccessHandlerImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.core.annotation.Order;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
import org.springframework.security.web.authentication.logout.LogoutFilter;
import org.springframework.web.filter.CorsFilter;

import javax.annotation.Resource;

/**
 * spring security配置
 *
 * @author ruoyi
 */
@EnableGlobalMethodSecurity(prePostEnabled = true, securedEnabled = true)
public class SecurityConfig {

    @Configuration
    @Order(99)
    public static class RuoyiSecurityConfig extends WebSecurityConfigurerAdapter {
        /**
         * 自定义用户认证逻辑
         */
        @Resource(name = "userDetailsServiceImpl")
        private UserDetailsService userDetailsService;

        /**
         * 认证失败处理类
         */
        @Autowired
        private AuthenticationEntryPointImpl unauthorizedHandler;

        /**
         * 退出处理类
         */
        @Autowired
        private LogoutSuccessHandlerImpl logoutSuccessHandler;

        /**
         * token认证过滤器
         */
        @Autowired
        private JwtAuthenticationTokenFilter authenticationTokenFilter;

        /**
         * 跨域过滤器
         */
        @Autowired
        private CorsFilter corsFilter;

        /**
         * 解决 无法直接注入 AuthenticationManager
         *
         * @return
         * @throws Exception
         */
        @Bean
        @Primary
        public AuthenticationManager ruoyiAuthenticationManagerBean() throws Exception {
            return super.authenticationManagerBean();
        }

        /**
         * anyRequest          |   匹配所有请求路径
         * access              |   SpringEl表达式结果为true时可以访问
         * anonymous           |   匿名可以访问
         * denyAll             |   用户不能访问
         * fullyAuthenticated  |   用户完全认证可以访问（非remember-me下自动登录）
         * hasAnyAuthority     |   如果有参数，参数表示权限，则其中任何一个权限可以访问
         * hasAnyRole          |   如果有参数，参数表示角色，则其中任何一个角色可以访问
         * hasAuthority        |   如果有参数，参数表示权限，则其权限可以访问
         * hasIpAddress        |   如果有参数，参数表示IP地址，如果用户IP和参数匹配，则可以访问
         * hasRole             |   如果有参数，参数表示角色，则其角色可以访问
         * permitAll           |   用户可以任意访问
         * rememberMe          |   允许通过remember-me登录的用户访问
         * authenticated       |   用户登录后可访问
         */
        @Override
        protected void configure(HttpSecurity httpSecurity) throws Exception {
            httpSecurity
                    // CSRF禁用，因为不使用session
                    .csrf()
                    .disable()
                    // 认证失败处理类
                    .exceptionHandling()
                    .authenticationEntryPoint(unauthorizedHandler)
                    .and()
                    // 基于token，所以不需要session
                    .sessionManagement()
                    .sessionCreationPolicy(SessionCreationPolicy.STATELESS)
                    .and()
                    // 过滤请求
                    .authorizeRequests()
                    // 对于登录login 验证码captchaImage 允许匿名访问
                    .antMatchers("/login", "/register", "/captchaImage", "/form/showForm", "/form/submitForm", "/answerblank/save", "/answerradio/save", "/answercheckbox/save", "answerdatetime/save", "answerlistbox/save")
                    .permitAll()
                    .antMatchers(HttpMethod.GET, "/", "/*.html", "/**/*.html", "/**/*.css", "/**/*.js", "/profile/**")
                    .permitAll()
                    .antMatchers("/common/download**")
                    .anonymous()
                    .antMatchers("/common/download/resource**")
                    .anonymous()
                    .antMatchers("/swagger-ui.html")
                    .anonymous()
                    .antMatchers("/swagger-resources/**")
                    .anonymous()
                    .antMatchers("/webjars/**")
                    .anonymous()
                    .antMatchers("/*/api-docs")
                    .anonymous()
                    .antMatchers("/druid/**")
                    .anonymous()
                    // 除上面外的所有请求全部需要鉴权认证
                    .anyRequest()
                    .authenticated()
                    .and()
                    .headers()
                    .frameOptions()
                    .disable();
            httpSecurity.logout().logoutUrl("/logout").logoutSuccessHandler(logoutSuccessHandler);
            // 添加JWT filter
            httpSecurity.addFilterBefore(
                    authenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);
            // 添加CORS filter
            httpSecurity.addFilterBefore(corsFilter, JwtAuthenticationTokenFilter.class);
            httpSecurity.addFilterBefore(corsFilter, LogoutFilter.class);
        }

        /**
         * 身份认证接口
         */
        @Override
        protected void configure(AuthenticationManagerBuilder auth) throws Exception {
            auth.userDetailsService(userDetailsService).passwordEncoder(new BCryptPasswordEncoder());
        }
    }
}
